Ultrasonic detection device for welded structural member of wind turbine generator

Abstract

The invention discloses a wind turbine generator welding structural member ultrasonic detection device which comprises a shell, a two-way screw is arranged at the position, close to the top, in the shell, a first case is fixedly installed at the position, close to the center, of the top of the shell, and a first motor is fixedly installed on one side in the first case; a first gear is arranged on one side of the first motor, and a second gear is fixedly mounted in the center of the surface of the two-way screw. According to the ultrasonic detection device for the wind turbine generator welding structural member, through the design of a bidirectional screw rod, a first motor, a first gear, a second gear, a nut sleeve, a lifting plate, a movable cross rod, a first sliding groove, a first sliding block, an upper hinge plate and a lower hinge plate, in an actual detection scene, the heights of the positions where the wind turbine generator welding structural member is located are different; after the first motor is started, the first gear can be driven to rotate, and then the second gear meshed with the first gear and the two-way screw rod are driven to rotate, so that the two nut sleeves move towards each other or away from each other along the two-way screw rod.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic detection devices, and in particular to an ultrasonic detection device for welding structural parts of a wind turbine generator set. Background Art

[0002] Against the backdrop of the global vigorous development of clean energy and the continuous expansion of wind power generation, wind turbines, as the core equipment of wind power generation, are of vital importance for their stable operation. Wind turbines are in complex and harsh natural environments for a long time. Welded structural parts, as key supporting and connecting components, are subjected to complex alternating loads. Ultrasonic testing has become an important means to ensure the quality of welded structural parts due to its unique advantages. It is based on the propagation characteristics of ultrasonic waves in materials and can accurately capture internal information. This technology has high sensitivity and can detect tiny potential defects. It has strong adaptability and can cope with structural parts of different shapes and materials. It is a non-destructive test and will not cause damage to the structural parts. Ultrasonic testing can provide early insight into the internal conditions of welded structural parts, provide solid guarantees for the safe and stable operation of wind turbines, and help the efficient development of the wind power industry.

[0003] In the current ultrasonic inspection of wind turbine welded structures, existing inspection devices have exposed many drawbacks that need to be addressed. When inspecting wind turbine welded structures in towering positions, the existing ultrasonic inspection devices are greatly reduced in flexibility and operability due to the high position of these structures. Inspectors find it difficult to easily and accurately place the device in the appropriate position to achieve a comprehensive and detailed inspection. Adjusting and fixing the device often requires a lot of time and effort, which greatly reduces inspection efficiency. The use of manual handheld inspection devices is even more problematic. On the one hand, manual operation cannot ensure the stability and accuracy of the inspection. When inspectors work at height, their bodies will unconsciously shake, and it is difficult to always maintain the same force and angle of the handheld device. This leads to deviations in the inspection results and affects the accuracy of the quality judgment of the welded structure. On the other hand, manual adjustment is extremely inconvenient in the face of the complex and changing positions and angles of the welded structures. It is difficult to quickly and accurately adjust the posture of the inspection device to meet the inspection requirements of different parts. This not only increases the difficulty and risk of inspection, but also makes the inspection work cumbersome and inefficient, and it is difficult to meet the actual requirements of efficient and accurate inspection of large-scale wind turbines. Therefore, we propose an ultrasonic detection device for welding structural parts of wind turbines. Summary of the Invention

[0004] The purpose of the present invention is to provide an ultrasonic detection device for welding structural parts of wind turbines to solve the problems raised in the above background technology. In the current ultrasonic detection work of welding structural parts of wind turbines, the existing detection devices have exposed many drawbacks that need to be solved. When inspecting the welding structures of wind turbines in high positions, due to the high positions of these structures, the flexibility and operability of the existing ultrasonic detection devices are greatly reduced. It is difficult for the inspection personnel to easily and accurately place the device in the appropriate position to achieve comprehensive and detailed inspections. It often takes a lot of time and energy to adjust and fix the device, which greatly reduces the inspection efficiency. The use of manual handheld inspection devices for operation The method is even more problematic. On the one hand, manual operation is difficult to ensure the stability and accuracy of detection. When the inspectors work at high altitudes, their bodies will shake unconsciously, and the strength and angle of the handheld device are difficult to maintain consistency. This leads to deviations in the detection results, affecting the accuracy of the quality judgment of welded structural parts. On the other hand, faced with the complex and changeable positions and angles of welding structures, manual adjustment operations are extremely inconvenient, and it is difficult to quickly and accurately adjust the posture of the detection device to adapt to the detection needs of different parts. This not only increases the difficulty and risk of detection, but also makes the detection work cumbersome and inefficient, making it difficult to meet the actual requirements of efficient and accurate detection of large-scale wind turbines.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ultrasonic detection device for welding structural parts of a wind turbine generator system, comprising a shell, a bidirectional screw is provided in the shell near the top position, a first chassis is fixedly installed in the center position of the top of the shell, a first motor is fixedly installed on one side of the first shell, a first gear is provided on one side of the first motor, a second gear is fixedly installed at the center of the surface of the bidirectional screw, nut sleeves are threadedly connected to the two side positions of the surface of the bidirectional screw, a lifting plate is provided at the lower end of the shell, a movable cross rod is provided in the shell near the center position, a first slide groove is opened at the two side positions of the top of the lifting plate, and a first slider is slidably connected to the opposite sides of the inner walls of the two first slide grooves, the centers of the lower ends of the two nut sleeves and the centers of the tops of the two first sliders are respectively fixedly connected to the upper hinge plate and the lower hinge plate, and the lifting plate The transmission gear of the present invention is a gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a

[0006] Preferably, the two ends of the bidirectional screw are movably connected to the first bearings fixedly installed at the top position on both sides of the shell, the lower end of the first chassis passes through the interior of the shell, the first motor is fixedly connected to the first main shaft through the output end on one side of the first motor, one end of the first main shaft is fixedly connected to the center of one side of the first gear, and the bottom of the first gear is meshed with the upper end of the second gear.

[0007] Preferably, the front and rear ends of the tops on both sides of the shell are fixedly connected with guide sleeves, and the tops of the lifting plates are respectively fixedly connected with guide columns at the lower ends of the four guide sleeves, and the upper ends of the four guide columns respectively penetrate into the interiors of the four guide sleeves and are in sliding contact with the inner walls of the guide sleeves.

[0008] Preferably, the two ends of the top of the movable cross rod are respectively hingedly connected to the front surfaces of the two upper hinge plates, and the lower end of the movable cross rod passes through the outside of the shell and is respectively hingedly connected to the front surfaces of the two lower hinge plates.

[0009] Preferably, the second motor is fixedly connected to the second main shaft through the output end on one side thereof, one end of the one-way screw is fixedly connected to one side of the second main shaft, a second slide groove is provided on one side of the top and bottom of the hollow column, and a second slider is fixedly connected to one side of the top and bottom of the telescopic rod, and the top and bottom of the two second sliders respectively extend to the interior of the two second slide grooves and are slidably connected to the inner walls of the second slide grooves.

[0010] Preferably, the third motor is fixedly connected to the third main shaft through the output end on one side thereof, one side of the third main shaft passes through the outside of the second chassis and is fixedly connected to the center of one side of the third gear, shaft seats are sleeved on both sides of the surface of the hollow column, the inner walls of the two shaft seats are fixedly installed with second bearings, the outer walls of the hollow column are respectively fixedly connected to the inner rings of the two second bearings, the tops of the two shaft seats are fixedly connected to the first connecting rod, and the tops of the two first connecting rods are fixedly connected to the bottom of the lifting plate.

[0011] Preferably, second connecting rods are fixedly connected to the four corners of the top of the shell, and the tops of the four second connecting rods are fixedly connected to the drone connecting frames.

[0012] A method for operating an ultrasonic detection device for welding structural parts of a wind turbine generator system comprises the following steps: Step 1: First, install the entire device on the drone through the drone connecting frame, and use the drone to carry the device to inspect the wind turbine. The operator sets the drone's flight route and target detection area coordinates through the ground control terminal. The drone takes off with the device. During the flight, the high-definition camera on the drone transmits the surrounding environment in real time to assist the operator in monitoring the flight status and position, ensuring that the device can smoothly and accurately reach the designated area above the wind turbine welding structure to be inspected.

[0013] Step 2: When the device reaches above the target area, in order to make the ultrasonic probe at a suitable height for subsequent detection operations, the first motor in the first chassis is started. The first motor runs, and the first main shaft at its output end drives the first gear to rotate. Since the first gear is engaged with the second gear at the center of the surface of the bidirectional screw, the second gear rotates accordingly, thereby driving the bidirectional screw to rotate stably under the support of the first bearings on both sides of the shell. The two nut sleeves on the bidirectional screw move toward or away from each other along the axial direction of the bidirectional screw under the action of the thread. The upper hinge plate at the lower end of the nut sleeve is hinged to the top of the movable cross rod, and the bottom of the movable cross rod is hinged to the lower hinge plate on the first slider at the top of the lifting plate. As the nut sleeve moves, the angle of the movable cross rod changes, pushing or pulling the lifting plate up or down. The guide column at the top of the lifting plate slides in the guide sleeve on the shell, playing a guiding and stabilizing role, preventing the lifting plate from deflecting or shaking during movement, ensuring a smooth and accurate lifting process, thereby adjusting the ultrasonic probe to the initial detection height, making it closer to the welded structure of the wind turbine generator set.

[0014] Step three: if the horizontal distance between the ultrasonic probe and the detection structure still does not meet the detection requirements after the initial height adjustment, start the second motor in the hollow column. When the second motor runs, the second main shaft at its output end drives the one-way screw to rotate. The one-way screw is threadedly connected to the thread groove on the telescopic rod. Driven by the thread, the telescopic rod performs telescopic movement along the axial direction of the hollow column. The second sliders at the top and bottom of the telescopic rod slide in the second slide groove in the hollow column to provide guidance and support for the movement of the telescopic rod, ensuring the stability and accuracy of the telescopic process, and avoiding the telescopic rod from rotating or getting stuck during the movement. By precisely controlling the operating direction and duration of the second motor, the telescopic length of the telescopic rod is adjusted, so that the ultrasonic probe can accurately approach the part to be detected of the welding structure of the wind turbine generator, and achieve accurate positioning of the detection point.

[0015] Step 4. To ensure that the ultrasonic probe can be aligned with the inspection structure at the optimal angle and achieve all-round, high-precision inspection, the third motor in the second chassis and the fourth motor on the bracket are started. When the third motor is running, the third main shaft at its output end drives the third gear to rotate. The third gear engages with the gear ring on the telescopic rod, thereby driving the hollow column to rotate around its own axis under the support of the second bearing in the shaft seat, thereby achieving angle adjustment of the ultrasonic probe in the horizontal plane. At the same time, the fourth motor is running, and the fourth main shaft at its output end drives the ultrasonic probe to rotate around its own axis to achieve angle adjustment in the vertical plane. By coordinated control of the operation of the third and fourth motors, the ultrasonic probe can be precisely adjusted at multiple angles in three-dimensional space to meet the inspection requirements of welded structural parts of wind turbines with different shapes and structures. After the ultrasonic probe is adjusted to the appropriate angle, it transmits an ultrasonic signal. The signal penetrates the surface of the structural part and is reflected when encountering internal defects. The probe receives the reflected signal and converts it into an electrical signal and transmits it to the inspection equipment, thereby accurately detecting possible defects inside the structural part.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The ultrasonic detection device for welding structural parts of a wind turbine generator set is designed with a bidirectional screw, a first motor, a first gear, a second gear, a nut sleeve, a lifting plate, a movable cross rod, a first slide groove, a first slider, an upper hinge plate and a lower hinge plate. In an actual detection scenario, the welding structural parts of the wind turbine generator set are located at different heights. After the first motor is started, it can drive the first gear to rotate, and then drive the second gear and the bidirectional screw engaged therewith to rotate, so that the two nut sleeves move toward or away from each other along the bidirectional screw. This movement pushes or pulls the lifting plate to rise and fall smoothly through the linkage of the upper hinge plate, the movable cross rod and the lower hinge plate. At the same time, the first slider The block slides in the first slide, providing a stable guide for the lifting process, ensuring that the lifting plate moves accurately in the vertical direction without offset or shaking. This height adjustment method is not only easy to operate and respond quickly, but also has a large adjustment range and high precision. It can easily adapt to the inspection needs of wind turbine welding structures at different heights, greatly improving the adaptability and efficiency of the inspection work, and providing a strong guarantee for the comprehensive and accurate inspection of wind turbine welding structures. The design of the hollow column, telescopic rod, thread groove, second motor, one-way screw, gear ring, third gear and third motor can meet the requirements of wind turbine welding structures of different sizes, shapes and positions. When inspecting parts, flexible adjustment of distance and angle is the key to ensuring the quality of inspection. The second motor drives the one-way screw to rotate. The one-way screw interacts with the thread groove on the telescopic rod, so that the telescopic rod can be smoothly and accurately extended and retracted in the hollow column. This telescopic adjustment method is simple to operate and responds quickly. It can quickly adjust the distance between the ultrasonic probe and the part to be inspected according to actual inspection needs, effectively solving the problem of weak detection signal or limited detection range due to improper distance, and ensuring the accuracy and reliability of the detection data. At the same time, the third motor drives the third gear to rotate, and the third gear engages with the gear ring, thereby driving the hollow column to rotate around its own axis to realize ultrasonic detection. The horizontal angle adjustment of the head allows inspectors to flexibly adjust the angle of the probe according to the specific direction and shape of the welded structure, so that it is always aligned with the inspection part in the best posture, avoiding the inspection blind spot caused by angle deviation. In addition, the angle adjustment structure cooperates with the telescopic adjustment structure to form a complete spatial adjustment system, which enables the ultrasonic probe to achieve multi-dimensional, high-precision position and angle adjustment in three-dimensional space, and can comprehensively and meticulously inspect various parts of the welded structure of the wind turbine, providing strong technical support for timely detection of potential defects and ensuring the safe and stable operation of the wind turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 A bottom view of the structure of the housing of the present invention; Figure 3 A top view of the structure of the lifting plate of the present invention; Figure 4 It is a structural stereogram of the telescopic rod of the present invention; Figure 5 This is a left side view of the structure of the hollow column of the present invention; Figure 6 It is the main view of the structure of the present invention.

[0018] In the figure: 1. Shell; 2. Bidirectional screw; 3. First chassis; 4. First motor; 5. First gear; 6. Second gear; 7. Nut sleeve; 8. Lifting plate; 9. Guide sleeve; 10. Guide column; 11. Movable cross rod; 12. First slide groove; 13. First slider; 14. Upper hinge plate; 15. Lower hinge plate; 16. Axle seat; 17. Hollow column; 18. Telescopic rod; 19. Thread groove; 20. Second motor; 21. One-way screw; 22. Second slide groove; 23. Second slider; 24. Gear ring; 25. Third gear; 26. Second chassis; 27. Third motor; 28. Bracket; 29. Fourth motor; 30. Ultrasonic probe; 31. First connecting rod; 32. Second connecting rod; 33. UAV connecting frame. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-6The present invention provides a technical solution: an ultrasonic detection device for welding structural parts of a wind turbine generator system, comprising a shell 1, a bidirectional screw 2 is provided near the top position in the shell 1, a first chassis 3 is fixedly installed near the center position on the top of the shell 1, a first motor 4 is fixedly installed on one side in the first chassis 3, a first gear 5 is provided on one side of the first motor 4, a second gear 6 is fixedly installed on the center of the surface of the bidirectional screw 2, nut sleeves 7 are threadedly connected to the two side positions of the surface of the bidirectional screw 2, a lifting plate 8 is provided at the lower end of the shell 1, a movable cross rod 11 is provided near the center position in the shell 1, first slide grooves 12 are provided on both sides of the top of the lifting plate 8, and first sliders 13 are slidably connected to the opposite sides of the inner walls of the two first slide grooves 12, an upper hinge plate 14 and a lower hinge plate 15 are fixedly connected to the center of the lower ends of the two nut sleeves 7 and the center of the tops of the two first sliders 13 respectively, and a hollow column 17 is provided at the lower end of the lifting plate 8. A second motor 20 is fixedly installed on one side of the hollow column 17, and a telescopic rod 18 is provided on the other side of the hollow column 17. A threaded groove 19 is opened in the center of one side of the telescopic rod 18, and the internal thread of the threaded groove 19 is connected to a one-way screw 21. One end of the telescopic rod 18 passes through the outside of the hollow column 17, and a gear ring 24 is fixedly installed on the center position of the surface of the telescopic rod 18. The upper end of the gear ring 24 is meshed with a third gear 25. A second chassis 26 is fixedly installed on the center position of the bottom of the lifting plate 8, and a third motor 27 is fixedly installed inside the second chassis 26. A bracket 28 is fixedly connected to one side of the hollow column 17, and an ultrasonic probe 30 is provided on one side of the rear surface of the bracket 28. A fourth motor 29 is fixedly installed at the center of one side of the front surface of the bracket 28. The fourth motor 29 is fixedly connected to the fourth main shaft through the output end of its rear surface. The rear end of the fourth main shaft passes through the outside of the bracket 28 and is fixedly connected to the front surface of the ultrasonic probe 30.

[0021] The two ends of the bidirectional screw 2 are movably connected to the first bearings fixedly installed at the top position on both sides of the shell 1. The lower end of the first chassis 3 passes through the interior of the shell 1. The first motor 4 is fixedly connected to the first main shaft through the output end on one side thereof. One end of the first main shaft is fixedly connected to the center of one side of the first gear 5, and the bottom of the first gear 5 is meshed with the upper end of the second gear 6.

[0022] The front and rear ends of the tops on both sides of the shell 1 are fixedly connected with guide sleeves 9, and the tops of the lifting plates 8 are fixedly connected with guide pillars 10 corresponding to the lower ends of the four guide sleeves 9. The upper ends of the four guide pillars 10 respectively penetrate into the interiors of the four guide sleeves 9 and are in sliding contact with the inner walls of the guide sleeves 9.

[0023] The two ends of the top of the movable cross rod 11 are respectively hingedly connected to the front surfaces of the two upper hinge plates 14, and the lower end of the movable cross rod 11 passes through the outside of the shell 1 and is respectively hingedly connected to the front surfaces of the two lower hinge plates 15.

[0024] The second motor 20 is fixedly connected to the second main shaft through the output end on one side thereof, one end of the one-way screw 21 is fixedly connected to one side of the second main shaft, a second slide groove 22 is opened on one side of the top and bottom of the hollow column 17, and a second slider 23 is fixedly connected to one side of the top and bottom of the telescopic rod 18. The top and bottom of the two second sliders 23 extend to the interior of the two second slide grooves 22 respectively and are slidably connected to the inner walls of the second slide grooves 22.

[0025] The third motor 27 is fixedly connected to the third main shaft through the output end on one side thereof. One side of the third main shaft passes through the outside of the second chassis 26 and is fixedly connected to the center of one side of the third gear 25. The surface of the hollow column 17 is provided with shaft seats 16 on both sides. The inner walls of the two shaft seats 16 are fixedly installed with second bearings. The outer walls of the hollow column 17 are respectively fixedly connected to the inner rings of the two second bearings. The tops of the two shaft seats 16 are fixedly connected to the first connecting rods 31. The tops of the two first connecting rods 31 are fixedly connected to the bottom of the lifting plate 8.

[0026] Second connecting rods 32 are fixedly connected to the four corners of the top of the shell 1, and the tops of the four second connecting rods 32 are fixedly connected to drone connecting frames 33.

[0027] A method for operating an ultrasonic detection device for welding structural parts of a wind turbine generator system comprises the following steps: Step 1: First, the device is installed as a whole on the drone through the drone connecting frame 33, and the wind turbine is inspected by the drone carrying the device. The operator sets the flight route of the drone and the coordinates of the target detection area through the ground control terminal. The drone takes off with the device. During the flight, the high-definition camera on the drone transmits the surrounding environment in real time to assist the operator in monitoring the flight status and position, ensuring that the device can smoothly and accurately reach the designated area above the wind turbine welding structure to be inspected.

[0028] Step 2: When the device reaches the target area, in order to make the ultrasonic probe 30 at a suitable height for subsequent detection operations, the first motor 4 in the first chassis 3 is started. The first motor 4 runs, and the first main shaft at its output end drives the first gear 5 to rotate. Since the first gear 5 and the second gear 6 at the center of the surface of the bidirectional screw 2 are meshed with each other, the second gear 6 rotates accordingly, thereby driving the bidirectional screw 2 to rotate stably under the support of the first bearings on both sides of the housing 1. The two nut sleeves 7 on the bidirectional screw 2 move toward or away from each other along the axial direction of the bidirectional screw 2 under the action of the thread, and the nut sleeve 7 moves downward. The upper hinged plate 14 at the end is hinged to the top of the movable cross rod 11, and the bottom of the movable cross rod 11 is hinged to the lower hinged plate 15 on the first slider 13 at the top of the lifting plate 8. As the nut sleeve 7 moves, the angle of the movable cross rod 11 changes, pushing or pulling the lifting plate 8 up or down, and the guide column 10 on the top of the lifting plate 8 slides in the guide sleeve 9 on the shell 1, playing a guiding and stabilizing role, preventing the lifting plate 8 from deflecting or shaking during movement, ensuring that the lifting process is smooth and accurate, thereby adjusting the ultrasonic probe 30 to the initial detection height, making it closer to the welding structure of the wind turbine.

[0029] Step three, if after the initial height adjustment, the horizontal distance between the ultrasonic probe 30 and the detection structure still does not meet the detection requirements, start the second motor 20 in the hollow column 17, and the second motor 20 runs, and the second main shaft at its output end drives the one-way screw 21 to rotate, and the one-way screw 21 is threadedly connected to the thread groove 19 on the telescopic rod 18. Driven by the thread, the telescopic rod 18 performs telescopic movement along the axial direction of the hollow column 17, and the second sliders 23 at the top and bottom of the telescopic rod 18 slide in the second slide groove 22 in the hollow column 17, providing guidance and support for the movement of the telescopic rod 18, ensuring the stability and accuracy of the telescopic process, and preventing the telescopic rod 18 from rotating or jamming during the movement. By precisely controlling the operating direction and duration of the second motor 20, the telescopic length of the telescopic rod 18 is adjusted, so that the ultrasonic probe 30 can accurately approach the part to be detected of the welding structure of the wind turbine generator, and accurate positioning of the detection point is achieved.

[0030] Step 4: To ensure that the ultrasonic probe 30 can be aligned with the detection structure at the best angle to achieve all-round and high-precision detection, start the third motor 27 in the second chassis 26 and the fourth motor 29 on the bracket 28. The third motor 27 is running, and the third main shaft at its output end drives the third gear 25 to rotate. The third gear 25 engages with the gear ring 24 on the telescopic rod 18, thereby driving the hollow column 17 to rotate around its own axis under the support of the second bearing in the shaft seat 16, thereby achieving the angle adjustment of the ultrasonic probe 30 in the horizontal plane. At the same time, the fourth motor 29 is running, and the fourth main shaft at its output end drives the The ultrasonic probe 30 rotates around its own axis to achieve angle adjustment in the vertical plane. By coordinating the operation of the third motor 27 and the fourth motor 29, the ultrasonic probe 30 can be precisely adjusted at multiple angles in three-dimensional space to meet the detection requirements of welded structural parts of wind turbines with different shapes and structures. After the ultrasonic probe 30 is adjusted to the appropriate angle, it emits an ultrasonic signal. The signal penetrates the surface of the structural part and is reflected when encountering internal defects. The probe receives the reflected signal and converts it into an electrical signal for transmission to the detection equipment, thereby accurately detecting possible defects inside the structural part.

[0031] In summary: the ultrasonic detection device for welding structural parts of a wind turbine generator set, through the design of the bidirectional screw 2, the first motor 4, the first gear 5, the second gear 6, the nut sleeve 7, the lifting plate 8, the movable cross rod 11, the first slide 12, the first slider 13, the upper hinge plate 14 and the lower hinge plate 15, in the actual detection scenario, the heights of the welding structural parts of the wind turbine generator set are different. After the first motor 4 is started in the present invention, it can drive the first gear 5 to rotate, and then drive the second gear 6 and the bidirectional screw 2 engaged therewith to rotate, so that the two nut sleeves 7 move toward or away from each other along the bidirectional screw 2. This movement pushes or pulls the lifting plate through the linkage of the upper hinge plate 14, the movable cross rod 11 and the lower hinge plate 15. 8 is lifted and lowered smoothly. At the same time, the first slider 13 slides in the first slide groove 12, providing a stable guide for the lifting process, ensuring that the lifting plate 8 moves accurately in the vertical direction without offset or shaking. This height adjustment method is not only easy to operate and responds quickly, but also has a large adjustment range and high precision. It can easily adapt to the inspection needs of wind turbine welding structures at different heights, greatly improving the adaptability and efficiency of the inspection work, and providing a strong guarantee for the comprehensive and accurate inspection of wind turbine welding structures. The design of the hollow column 17, telescopic rod 18, threaded groove 19, second motor 20, one-way screw 21, gear ring 24, third gear 25 and third motor 27 can be used in the face of different sizes and shapes. When welding structural parts of wind turbines in different positions, flexible adjustment of distance and angle is the key to ensuring the quality of detection. The second motor 20 drives the one-way screw 21 to rotate. The one-way screw 21 interacts with the thread groove 19 on the telescopic rod 18, so that the telescopic rod 18 can be smoothly and accurately extended and retracted in the hollow column 17. This telescopic adjustment method is simple to operate and responds quickly. It can quickly adjust the distance between the ultrasonic probe 30 and the part to be detected according to actual detection needs, effectively solving the problem of weak detection signal or limited detection range due to improper distance, and ensuring the accuracy and reliability of the detection data. At the same time, the third motor 27 drives the third gear 25 to rotate, and the third gear 25 engages with the gear ring 24, thereby driving the hollow column 17. The column 17 rotates around its own axis to achieve horizontal angle adjustment of the ultrasonic probe 30. This design allows the inspector to flexibly adjust the angle of the probe according to the specific direction and shape of the welded structure, so that it is always aligned with the inspection part in the best posture, avoiding the inspection blind spot caused by angle deviation. In addition, the angle adjustment structure cooperates with the telescopic adjustment structure to form a complete spatial adjustment system, which enables the ultrasonic probe 30 to achieve multi-dimensional, high-precision position and angle adjustment in three-dimensional space, and can comprehensively and meticulously inspect various parts of the welded structure of the wind turbine, providing strong technical support for timely discovery of potential defects and ensuring the safe and stable operation of the wind turbine.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic detection device for welding structural parts of a wind turbine generator system, comprising a housing (1), characterized in that: A bidirectional screw (2) is provided at the top position of the housing (1), a first chassis (3) is fixedly installed at the center position of the top of the housing (1), a first motor (4) is fixedly installed at one side of the first chassis (3), a first gear (5) is provided at one side of the first motor (4), a second gear (6) is fixedly installed at the center of the surface of the bidirectional screw (2), nut sleeves (7) are threadedly connected at both sides of the surface of the bidirectional screw (2), a lifting plate (8) is provided at the lower end of the housing (1), and the housing A movable cross rod (11) is provided at the center position of (1), first slide grooves (12) are provided at both sides of the top of the lifting plate (8), and first sliders (13) are slidably connected to the opposite sides of the inner walls of the two first slide grooves (12). The centers of the lower ends of the two nut sleeves (7) and the centers of the tops of the two first sliders (13) are fixedly connected to the upper hinge plate (14) and the lower hinge plate (15), respectively. A hollow column (17) is provided at the lower end of the lifting plate (8), and a second motor ( 20), a telescopic rod (18) is provided on the other side of the hollow column (17), a thread groove (19) is provided at the center of one side of the telescopic rod (18), the internal thread of the thread groove (19) is connected with a one-way screw (21), one end of the telescopic rod (18) passes through the outside of the hollow column (17), a gear ring (24) is fixedly installed at the center position of the surface of the telescopic rod (18), the upper end of the gear ring (24) is meshed with a third gear (25), and a second gear is fixedly installed at the center position of the bottom of the lifting plate (8). A chassis (26), a third motor (27) is fixedly installed inside the second chassis (26), a bracket (28) is fixedly connected to one side of the hollow column (17), an ultrasonic probe (30) is provided on one side of the rear surface of the bracket (28), a fourth motor (29) is fixedly installed at the center of one side of the front surface of the bracket (28), the fourth motor (29) is fixedly connected to a fourth main shaft through the output end of the rear surface thereof, and the rear end of the fourth main shaft passes through the outside of the bracket (28) and is fixedly connected to the front surface of the ultrasonic probe (30).

2. The ultrasonic detection device for welding structural parts of a wind turbine generator set according to claim 1, characterized in that: The two ends of the bidirectional screw (2) are movably connected to first bearings fixedly installed at the top positions on both sides of the housing (1), the lower end of the first chassis (3) extends into the interior of the housing (1), the first motor (4) is fixedly connected to the first main shaft through the output end on one side thereof, one end of the first main shaft is fixedly connected to the center of one side of the first gear (5), and the bottom of the first gear (5) is meshed with the upper end of the second gear (6).

3. The ultrasonic detection device for welding structural parts of a wind turbine generator set according to claim 1, characterized in that: The front and rear ends of the tops of both sides of the shell (1) are fixedly connected to guide sleeves (9), and the tops of the lifting plates (8) are fixedly connected to the lower ends of the four guide sleeves (9) respectively. The upper ends of the four guide sleeves (10) respectively penetrate into the interiors of the four guide sleeves (9) and are in sliding contact with the inner walls of the guide sleeves (9).

4. The ultrasonic detection device for welding structural parts of a wind turbine generator set according to claim 1, characterized in that: The two ends of the top of the movable cross rod (11) are respectively hingedly connected to the front surfaces of the two upper hinge plates (14), and the lower end of the movable cross rod (11) passes through the outside of the shell (1) and is respectively hingedly connected to the front surfaces of the two lower hinge plates (15).

5. The ultrasonic detection device for welding structural parts of a wind turbine generator set according to claim 1, characterized in that: The second motor (20) is fixedly connected to the second main shaft through the output end on one side thereof, one end of the one-way screw (21) is fixedly connected to one side of the second main shaft, a second slide groove (22) is provided on one side of the top and bottom of the hollow column (17), and a second slider (23) is fixedly connected to one side of the top and bottom of the telescopic rod (18), and the top and bottom of the two second sliders (23) respectively extend into the interior of the two second slide grooves (22) and are slidably connected to the inner wall of the second slide groove (22).

6. The ultrasonic detection device for welding structural parts of a wind turbine generator set according to claim 1, characterized in that: The third motor (27) is fixedly connected to the third main shaft through the output end on one side thereof, and one side of the third main shaft passes through the outside of the second chassis (26) and is fixedly connected to the center of one side of the third gear (25). The surface of the hollow column (17) is provided with shaft seats (16) on both sides, and the inner walls of the two shaft seats (16) are fixedly installed with second bearings. The outer walls of the hollow column (17) are fixedly connected to the inner rings of the two second bearings respectively, and the tops of the two shaft seats (16) are fixedly connected to the first connecting rods (31), and the tops of the two first connecting rods (31) are fixedly connected to the bottom of the lifting plate (8).

7. The ultrasonic detection device for welding structural parts of a wind turbine generator set according to claim 1, characterized in that: Second connecting rods (32) are fixedly connected to the four corners of the top of the shell (1), and the tops of the four second connecting rods (32) are fixedly connected to drone connecting frames (33).

8. An operating method of an ultrasonic detection device for welding structural parts of a wind turbine generator set according to any one of claims 1 to 7, characterized in that: The steps include: Step 1: First, the device is installed as a whole on the drone through the drone connecting frame (33), and the wind turbine is inspected by the drone carrying the device. The operator sets the flight route of the drone and the coordinates of the target detection area through the ground control terminal. The drone takes off with the device. During the flight, the high-definition camera on the drone transmits the surrounding environment image in real time to assist the operator in monitoring the flight status and position, ensuring that the device can smoothly and accurately reach the designated area above the wind turbine welding structure to be inspected; Step 2: When the device reaches the target area, in order to place the ultrasonic probe (30) at a suitable height for subsequent detection operations, the first motor (4) in the first chassis (3) is started. The first motor (4) runs, and the first main shaft at its output end drives the first gear (5) to rotate. Since the first gear (5) and the second gear (6) at the center of the surface of the bidirectional screw (2) are meshed with each other, the second gear (6) rotates accordingly, thereby driving the bidirectional screw (2) to rotate stably under the support of the first bearings on both sides of the housing (1). Under the action of the thread, the two nut sleeves (7) on the bidirectional screw (2) move toward or away from each other along the axial direction of the bidirectional screw (2), and the nut sleeve (7) moves downward. The upper hinge plate (14) at the end is hinged to the top of the movable cross rod (11), and the bottom of the movable cross rod (11) is hinged to the lower hinge plate (15) on the first slider (13) at the top of the lifting plate (8). As the nut sleeve (7) moves, the angle of the movable cross rod (11) changes, pushing or pulling the lifting plate (8) up or down, and the guide column (10) at the top of the lifting plate (8) slides in the guide sleeve (9) on the shell (1), playing a guiding and stabilizing role, preventing the lifting plate (8) from deflecting or shaking during the movement, ensuring a smooth and accurate lifting process, thereby adjusting the ultrasonic probe (30) to a preliminary detection height, so that it is closer to the welding structure of the wind turbine; Step 3: If the horizontal distance between the ultrasonic probe (30) and the detection structure still does not meet the detection requirements after the initial height adjustment, the second motor (20) in the hollow column (17) is started, and the second main shaft of the second motor (20) at its output end drives the one-way screw (21) to rotate. The one-way screw (21) is threadedly connected to the thread groove (19) on the telescopic rod (18). Under the drive of the thread, the telescopic rod (18) performs telescopic movement along the axial direction of the hollow column (17). The second sliders (23) at the top and bottom of the telescopic rod (18) slide in the second slide groove (22) in the hollow column (17), providing guidance and support for the movement of the telescopic rod (18), ensuring the stability and accuracy of the telescopic process, and preventing the telescopic rod (18) from rotating or getting stuck during the movement. By accurately controlling the operating direction and duration of the second motor (20), the telescopic length of the telescopic rod (18) is adjusted, so that the ultrasonic probe (30) can be accurately close to the part to be detected of the welding structure of the wind turbine generator set, and accurate positioning of the detection point is achieved; Step 4: To ensure that the ultrasonic probe (30) can be aligned with the detection structure at the best angle to achieve all-round, high-precision detection, the third motor (27) in the second chassis (26) and the fourth motor (29) on the bracket (28) are started. The third motor (27) is running, and the third main shaft at its output end drives the third gear (25) to rotate. The third gear (25) is engaged with the gear ring (24) on the telescopic rod (18), thereby driving the hollow column (17) to rotate around its own axis under the support of the second bearing in the shaft seat (16), thereby achieving the angle adjustment of the ultrasonic probe (30) in the horizontal plane. At the same time, the fourth motor (29) is running, and its output end is engaged with the third main shaft. The fourth main shaft at the output end drives the ultrasonic probe (30) to rotate around its own axis to achieve angle adjustment in the vertical plane. By cooperatively controlling the operation of the third motor (27) and the fourth motor (29), the ultrasonic probe (30) can be accurately adjusted at multiple angles in three-dimensional space to meet the detection requirements of welded structural parts of wind turbines with different shapes and structures. After the ultrasonic probe (30) is adjusted to a suitable angle, it transmits an ultrasonic signal. The signal penetrates the surface of the structural part and is reflected when encountering internal defects. The probe receives the reflected signal and converts it into an electrical signal and transmits it to the detection equipment, thereby accurately detecting possible defects inside the structural part.

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